Armoured cable is not rated for direct burial. Use a cable that is rated for direct burial or use a PVC conduit to pull the cable through. PVC burial is two feet, three feet if vehicular traffic will pass over the conduit.
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If the site is in the UK, to comply with the latest Wiring Regulations it is essential to install an RCD to protect the buried armoured cable and the associated external light fittings.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
The radius of the curve of the inner edge of the bends shall be at least 6 times the external diameter for armoured cable.
Cable Glands cover the whole spectrum of armoured and non-armoured cable and applications from general industrial through increased safety, deluge, flameproof and explosion proof. The Cable Glands are available in Brass as standard with Stainless Steel, Plastic and Aluminium, as an optional material on certain designs. Generally they are used by oil and gas units, electrical cable sealing companies and marine applications. Depending on the applications they are many type of cable gland available like indoor cable glands, outdoor cable glands and cable gland accessories like PVC shrouds, lock nuts and cable ties.
It would be ok for a short time e.g. a day or two but a permanent installations needs an armoured cable. Depending on where it is there might also be regulations about how deep it must be buried. ~ Depending on your country of domicile. Laws in different countrys will have differing views on this practice. However, in general the answer is NO. Extension cables are made for surface use. If they are to be covered it should be with a rubber housing covering any areas that might have people walking over it, where heavy items are carried over it or where anything wheel based will have to cross the cable. If the general public are to cross the area then the cable should be signposted by black and yellow ribbon to show a hazard. Any cable being buried in the ground must be earthed (grounded) and have the required armour levls applied i.e. Armourcore cables.
Four core armoured cable would be used in a circuit carrying 240 Volts 60 Hz AC that is installed in a location where it could get damaged, such as underground or under water. The 4 cores in the armoured cable would be used as the following conductors for the 240 V 60 Hz circuit: * "Red" hot (120V above Neutral)* "Black" Hot (120V below Neutral)* "Neutral"* "Ground" to protect the circuit, connected to the main incoming supply panel which feeds the circuit.
If your house wiring is encased in armoured (metal) sheathing back to the panel, then you can secure the green ground to the ground screw in the box. Make sure the armoured cable connector is tight on the box. This should ground the light back to the panel. If you are on "knob & tube" I would suggest thinking about re-wiring the house.
The use of armoured cable is determined by the application that needs an electrical source of voltage. It is a metal sheath cable classification. Armoured cable is used in applications that need mechanical protection usually below a certain elevation. Armoured cable is also usually used on surface wiring. If you have access to an electrical code book there is a whole section on armoured cable. In the CEC the section about armoured cable starts at 12-600 to 12-618.
Copper xlpe armoured cable
Yry means copper round armoured cable
The advantage of using armoured cable over rigid conduit systems is the flexibility of the cable. There are some situations where conduit can not be bent into the shade needed to make a proper connection to a device. Because of the flexibility if the armoured cable it can be used instead to make a presentable looking job.
SWB - Steel Wire Braid
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Copper XLPE Armoured Power Cables.
The radius of the curve of the inner edge of the bends shall be at least 6 times the external diameter for armoured cable.
Steel tape armoured(STA) is only used for buried cables or ordinary wear tube, common ground, tunnel laying. For the last of the cable package to protect. Steel tape armoured is one kind of armored cable. General use the left double gap around the package, the lapping gap is not greater 50% of the bandwidth. And the inner steel strip gap should be close to the middle part of the outer strip. Steel tape armoured commonly used galvanized steel and painted steel armor, common specifications can be divided according to the thickness: 0.25mm,0.3mm,0.5mm,0.8mm. Galvanized layer should be uniform and complete, no peeling, cracking, corrosion. The coating layer of painted steel strip should be uniform and continuous, allow a slight sagging, bruises, but may not have a large loss or missed.
there should be a certain cable for that
its generally use for undersea cables
Armoured cable is not rated for underground installations. You have to use a cable with a designation for direct burial or wet and damp locations.